mirror of https://github.com/hak5/openwrt-owl.git
71 lines
2.3 KiB
Diff
71 lines
2.3 KiB
Diff
|
--- a/arch/mips/include/asm/cpu-features.h
|
||
|
+++ b/arch/mips/include/asm/cpu-features.h
|
||
|
@@ -158,6 +158,9 @@
|
||
|
#ifndef cpu_has_local_ebase
|
||
|
#define cpu_has_local_ebase 1
|
||
|
#endif
|
||
|
+#ifndef cpu_use_kmap_coherent
|
||
|
+#define cpu_use_kmap_coherent 1
|
||
|
+#endif
|
||
|
|
||
|
/*
|
||
|
* I-Cache snoops remote store. This only matters on SMP. Some multiprocessors
|
||
|
--- a/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
|
||
|
+++ b/arch/mips/include/asm/mach-bcm47xx/cpu-feature-overrides.h
|
||
|
@@ -79,4 +79,6 @@
|
||
|
#define cpu_scache_line_size() 0
|
||
|
#define cpu_has_vz 0
|
||
|
|
||
|
+#define cpu_use_kmap_coherent 0
|
||
|
+
|
||
|
#endif /* __ASM_MACH_BCM47XX_CPU_FEATURE_OVERRIDES_H */
|
||
|
--- a/arch/mips/mm/c-r4k.c
|
||
|
+++ b/arch/mips/mm/c-r4k.c
|
||
|
@@ -592,7 +592,7 @@ static inline void local_r4k_flush_cache
|
||
|
*/
|
||
|
map_coherent = (cpu_has_dc_aliases &&
|
||
|
page_mapped(page) && !Page_dcache_dirty(page));
|
||
|
- if (map_coherent)
|
||
|
+ if (map_coherent && cpu_use_kmap_coherent)
|
||
|
vaddr = kmap_coherent(page, addr);
|
||
|
else
|
||
|
vaddr = kmap_atomic(page);
|
||
|
@@ -617,7 +617,7 @@ static inline void local_r4k_flush_cache
|
||
|
}
|
||
|
|
||
|
if (vaddr) {
|
||
|
- if (map_coherent)
|
||
|
+ if (map_coherent && cpu_use_kmap_coherent)
|
||
|
kunmap_coherent();
|
||
|
else
|
||
|
kunmap_atomic(vaddr);
|
||
|
--- a/arch/mips/mm/init.c
|
||
|
+++ b/arch/mips/mm/init.c
|
||
|
@@ -160,7 +160,7 @@ void copy_user_highpage(struct page *to,
|
||
|
void *vfrom, *vto;
|
||
|
|
||
|
vto = kmap_atomic(to);
|
||
|
- if (cpu_has_dc_aliases &&
|
||
|
+ if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
|
||
|
page_mapped(from) && !Page_dcache_dirty(from)) {
|
||
|
vfrom = kmap_coherent(from, vaddr);
|
||
|
copy_page(vto, vfrom);
|
||
|
@@ -182,7 +182,7 @@ void copy_to_user_page(struct vm_area_st
|
||
|
struct page *page, unsigned long vaddr, void *dst, const void *src,
|
||
|
unsigned long len)
|
||
|
{
|
||
|
- if (cpu_has_dc_aliases &&
|
||
|
+ if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
|
||
|
page_mapped(page) && !Page_dcache_dirty(page)) {
|
||
|
void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
|
||
|
memcpy(vto, src, len);
|
||
|
@@ -200,7 +200,7 @@ void copy_from_user_page(struct vm_area_
|
||
|
struct page *page, unsigned long vaddr, void *dst, const void *src,
|
||
|
unsigned long len)
|
||
|
{
|
||
|
- if (cpu_has_dc_aliases &&
|
||
|
+ if (cpu_has_dc_aliases && cpu_use_kmap_coherent &&
|
||
|
page_mapped(page) && !Page_dcache_dirty(page)) {
|
||
|
void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
|
||
|
memcpy(dst, vfrom, len);
|